fixed memory leaks in command.c
Fix a small typo

(`Invalud' -> `Invalid')
Merge pull request #197 from SamWhited/patch-1

Fix a small typo
Merge pull request #196 from pasis/memleaks

Fixed memory leaks in command.c
Tidied help
Fixed naming clash for roster help
Coloured contact and subscription in /roster and /group output
Fix autocompletion of quoted strings - WIP

Needs some refactoring
Need to use unicode functions in:
    parser.c
    autocomplete.c
Removed debug
Down arrow adds current line to history and shows empty line